CN101080694B - Method and device for migrating operating system from source computer to target computer - Google Patents

Method and device for migrating operating system from source computer to target computer Download PDF

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Publication number
CN101080694B
CN101080694B CN200580042925.1A CN200580042925A CN101080694B CN 101080694 B CN101080694 B CN 101080694B CN 200580042925 A CN200580042925 A CN 200580042925A CN 101080694 B CN101080694 B CN 101080694B
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adapter
zone
source
operating system
computing machine
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CN101080694A (en
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詹姆斯·艾伦
丹尼尔·埃森豪尔
吉尔斯·弗拉兹尔
罗伯特·考瓦克斯
萨特亚·沙尔马
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International Business Machines Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • H04L41/084Configuration by using pre-existing information, e.g. using templates or copying from other elements
    • H04L41/0846Configuration by using pre-existing information, e.g. using templates or copying from other elements based on copy from other elements
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00Arrangements for software engineering
    • G06F8/60Software deployment
    • G06F8/61Installation
    • G06F8/63Image based installation; Cloning; Build to order
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/40Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities

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Abstract

Methods, systems, and computer program products are provided for migrating an operating system from a source computer to a destination computer. Some embodiments include identifying a destination adapter of the destination computer that is coupled for data communications to a SAN that is also coupled for data communications to a source adapter of the source computer, logging off a virtual port name of the source adapter from the login manager, deregistering the virtual port name from the source adapter, registering the virtual port name with the destination adapter, and logging on the destination adapter to the login manager with the virtual port name. Typical embodiments also include transferring the operating system from the source computer to the destination computer.

Description

Operating system is moved to purpose computer method and device from source machine
Technical field
The field of the invention is a data processing, or specifically, is to be used for preparing operating system is moved to purpose computer method, system and product from source machine.
Background technology
In many cases, carrying out operating system is suitable from source machine to the migration of purpose computing machine, and often carries out.If the system manager is planning to carry out hardware maintenance on source machine hardware, for example, the system manager can comprise the operating system of the application program of its current installation to another computer migrates.It is that situation suitable and that often carry out is that another kind carries out operating system migration, when the operating system of moving on a source machine has exceeded physical resource when restriction of the hardware of this source machine, the system manager may wish to move to another computing machine that its hardware can satisfy resource requirement.
When operating system during as assembly operation in the complex network (for example, storage area network SAN), the executive operating system migration has brought many challenges.SAN be used for to one or more webservers can with relate to the dedicated network that stored resource interconnects.SAN separates with Local Area Network and wide area network (WAN) usually.Usually the characteristics of SAN are to store the member higher interconnect data speed between the peripherals.The common characteristics of SAN also are highly extendible architecture.SAN comprises the hardware and software that is used to carry out hardware management, supervision and configuration.
Carrying out operating system migration when the operating system that will move is connected to SAN, to cause a reason of challenge be that SAN is " subregional " normally.The subregion is that main frame and resource are carried out logic groups.The operating system of subregion only is allowed to the memory device in the zone of operating system is conducted interviews.SAN is carried out subregion have many advantages, comprise special use, data integrity and the security of load balance, memory capacity, and as other advantage known to the those skilled in the art.
Usually a kind of subregion that utilizes SAN to realize is logical block mask (" a LUN mask ").In the LUN mask, each memory device all is subdivided into logical block (LUN), and each memory device all limits the visit of operating system to specific LUN.That is, only allow operating system that the storer in its LUN is conducted interviews.
Routine operation system migration Technology Need carries out a large amount of the same memories that just can make among the identical LUN of operating system access that reconfigures to SAN after migration.Therefore, need be used for operating system moved to the purpose computing machine and do not need from source machine storage area network (SAN) is reconfigured or only need carry out seldom the method that reconfigures, system and product.
Summary of the invention
Also provide and be used for operating system is moved to purpose computer method, system and computer program from source machine, (described purpose adapter is coupled to carry out data communication with SAN to comprise the purpose adapter of identifying purpose computing machine, the source adapter that described SAN is also coupled with source machine carries out data communication), from the zone, delete source adapter, adding purpose adapter in the zone, from login manager, nullify source adapter, and the purpose adapter is signed in to login manager.Typical embodiment also comprises operating system is transferred to the purpose computing machine from source machine.
Under the preferable case, provide to be used for operating system is moved to purpose computer method, system and computer program from source machine.Some embodiment comprises the purpose adapter of identifying purpose computing machine, and (described purpose adapter is coupled to carry out data communication with SAN, the source adapter that described SAN is also coupled with source machine carries out data communication), from login manager, nullify the virtual port names of source adapter, from source adapter, cancel virtual port names, to purpose adapter registration virtual port names, and utilize virtual port names to login manager login purpose adapter.Typical embodiment also comprises operating system is transferred to the purpose computing machine from source machine.
In typical embodiment, (described purpose adapter is coupled to carry out data communication with SAN the purpose adapter of identifying purpose computing machine, the source adapter that described SAN is also coupled with source machine carries out data communication) process comprise server inquired about, to search the world-wide port name of purpose adapter.In typical embodiment, (described purpose adapter is coupled to carry out data communication with SAN the purpose adapter of identifying purpose computing machine, the source adapter that described SAN is also coupled with source machine carries out data communication) process comprise server inquired about, to search the purpose computing machine of purpose adapter.
In many examples, the virtual port names of cancellation source adapter is to carry out with the related of virtual port names by removing N Port ID from login manager.In many examples, utilize virtual port star purpose adapter to sign in to login manager by carrying out N Port ID is related with virtual port names.
In typical embodiment, the process of deletion source adapter comprises the zone that identification is related with source adapter from the zone, discerns the target related with source adapter, and the releasing source adapter is related with target, and deletes source adapter from the zone.In typical embodiment, the process of adding purpose adapter comprises the zone that identification is related with source adapter in the zone, comprises the purpose adapter in the zone, discerns the target related with source adapter, and with purpose adapter and target association.
Illustrated as accompanying drawing, according to following more detailed explanation to one exemplary embodiment of the present invention, front of the present invention and other purposes, feature and advantage will become apparent, in the accompanying drawings, the similar part of Reference numeral general proxy one exemplary embodiment of the present invention.
Description of drawings
Fig. 1 has described and operating system can have been moved to the exemplary data disposal system of purpose computing machine from source machine, does not need storage area network (SAN) is reconfigured or only need carry out reconfiguring seldom.Fig. 2 has provided the block scheme of automated computer, is used for according to an embodiment of the invention operating system being moved to from source machine the computing machine of purpose computing machine.
Fig. 3 has shown moves to the exemplary method of purpose computing machine with operating system from source machine, and this process does not need SAN is reconfigured, and can carry out by the transferring module in the operating system to be migrated.
Fig. 4 has provided the exemplary method of the purpose adapter that is used for the identifying purpose computing machine, and described purpose adapter is coupled to carry out data communication with SAN, and the source adapter that described SAN is also coupled with source machine carries out data communication;
Fig. 5 has provided moves to the another kind of method of purpose computing machine with operating system from source machine, does not need to use virtual port names, only to minimum the reconfiguring of carrying out of SAN.
Fig. 6 is the process flow diagram that has shown the exemplary method of deletion source adapter from the zone.
Fig. 7 provides the process flow diagram of description exemplary method of adding purpose adapter in the zone.
Embodiment
In this manual, to a great extent, be by description operating system to be moved to the purpose computer method from source machine to describe of the present invention.Yet those skilled in the art will recognize, comprise be used for the suitable programmer operated according to illustrated method any computer system also all within the scope of the invention.Suitable programmer comprises any device of the step that is used to indicate computer system to carry out method of the present invention, comprise, the system that constitutes by processing unit that is connected to computer memory and logical circuit of arithmetic for example, described system has the ability that is stored in the computer memory, described computer memory comprises and is configured to store data and programmed instruction, and the electronic circuit of the program step of the method for being carried out by processing unit of the present invention.The present invention also can realize with the computer program such as disk or other recording mediums, uses for any suitable data disposal system.The embodiment of computer program can realize by any recording medium that use is used for machine-readable information, comprises magnetic medium, optical medium, or other suitable media.Those skilled in the art will recognize immediately, step with method of the present invention that any computer system of suitable programmer realized in can the executive routine product. those skilled in the art will recognize immediately, though the most of one exemplary embodiment described in this instructions are at the software that is installed on the computer hardware and carries out therein, however, as firmware or also within the scope of the invention as hard-wired alternative.
Has the operating system migration that minimal storage area network reconfigures
Referring now to the accompanying drawing description operating system is moved to purpose computer method, system and product from source machine, from Fig. 1.Fig. 1 has described and operating system can have been moved to the exemplary data disposal system of purpose computing machine from source machine, does not need storage area network (SAN) is reconfigured or only need carry out reconfiguring seldom.The system of Fig. 1 comprises the many computing machines that are used for carrying out at network data communication of connection.All installed on each computing machine of the system of Fig. 1 and can move to another operation system of computer.
The data handling system of Fig. 1 comprises wide area network (WAN) (101) and storage area network (SAN) (103).The network of the architecture of Fig. 1 connects and only is used for explanation, does not make restriction.In fact, be used for that according to an embodiment of the invention operating system is moved to the purpose system for computer from source machine and also can be used as LAN, WAN, in-house network, extranets, the Internet, web, WWW itself, or connect as known to the those skilled in the art other.Such network is to be used for the various device, the computing machine that link together in the conceptual data disposal system, and the media that provides data communication to connect between the computer memory.In the example of Fig. 1, comprise PDA (109), computer workstation (104), mobile phone (110), and a plurality of demonstration equipments of personal computer (108) are connected to WAN (101).The mobile phone of network enabled (109) is connected to WAN (101) by Radio Link (116), and PDA (112) is connected to WAN (101) by Radio Link (114).In the example of Fig. 1, personal computer (108) connects (120) by Wireline and is connected to WAN (101), and computer workstation (104) connects (122) by Wireline and is connected to WAN (101).
In the example of Fig. 1, each computing machine that is connected to WAN (101) can be visited the storage area network (SAN) (103) that many memory devices are provided.In the example of Fig. 1, two Redundant Array of Independent Disks (126 and 138) are connected (118 and 136) by optical fiber and are connected to SAN (103).Redundant Array of Independent Disks (RAID) is to use two or more drivers in combination so that be improved fault-tolerant and improve the disc driver of performance.In the example of Fig. 1, tape backup (128) also connects (124) by optical fiber and is connected to SAN (103).
In the example of Fig. 1, SAN (103) is a fiber channel network.Optical-fibre channel is the protocol suite of carrying out data transmission in SAN.Optical-fibre channel is the architecture by the exploitation of computing machine and mass-memory unit GPMA, by current by American National Standards Institute (ANSI) (ANSI) standardization.Optical-fibre channel is for the design of the mass-memory unit of the very high bandwidth of needs and other peripherals.By using light transmitting fiber to come connection device, fibre channel supports high data transfer rates.Interested reader can search the more information of relevant optical-fibre channel in current available fibre channel specification, this ANSI Document Title is InformationTechnology-Fibre Channel Framing and Signaling Interface (FC-FS), be numbered ANSI/INCITS 373.
Although in this manual, be that the description of reference optical fiber passage is used for operating system is moved to purpose computer method, system and product from source machine,, this is used for explanation, and does not make restriction.In fact, operating system is moved to the purpose computing machine from source machine can use many different SAN technology, for example,
Figure S05842925120070618D000061
ISCSI SAN, and other are as the technology known to the those skilled in the art.
In the example of Fig. 1, login manager (134) is connected to SAN (103) by optical fiber link (144).Login manager (134) management is carried out the registration of adapter and the cancellation of adapter to SAN.The exemplary SAN of Fig. 1 also comprises zone manager (626), and this zone manager provides visit to the memory device of the distribution of this operating system by giving each operating system be connected to SAN, has realized the subregion on the SAN.
Operating system is being moved to from source machine some method of purpose computing machine, and operating system to be migrated comprises transferring module, is convenient to move according to an embodiment of the invention.In some such embodiment, transferring module in the operating system generally can the identifying purpose computing machine the purpose adapter (described purpose adapter is coupled to carry out data communication with SAN, the source adapter that described SAN is also coupled with source machine carries out data communication), from login manager, nullify the virtual port names of source adapter, and from source adapter, cancel virtual port names.After being transferred to the purpose computing machine from source machine, the transferring module of operating system generally can be registered virtual port names to the purpose adapter, and utilizes virtual port names to login manager login purpose adapter.Such embodiment does not need SAN is reconfigured as a part of moving.On the contrary, such embodiment comprises to purpose adapter registration operating system, utilizes the previous same virtual port star's purpose adapter that is used by the source adapter of source machine to sign in on the login manager (134).
Connect for setting up optical-fibre channel, the port name of fibre channel adapter must be related with N-PortID.Each end points in the connection all is called N_Port (node port), comprises N_Port ID and port name.The N_Port ID of destination interface is the destination address that sends to the fibre channel frame of this port, and the N_Port ID of source port is a source address.Port name is a global unique identification symbol (being similar to the MAC Address in the Ethernet), can be by the inquiry of the miscellaneous equipment among the SAN, to determine the identity of this N_Port.
Distribute the world-wide port name (WWPN) of pre-burning for the conventional fiber channel adapter, identify adapter uniquely, and be used to set up the optical-fibre channel connection.The world-wide port name of these pre-burnings is static, can not distribute to other adapters.Yet N_Port ID virtual (NPIV) provide the optical-fibre channel function, is used for distributing virtual port names to adapter.NPIV allows to distribute more than one virtual port names to the single optical fiber channel adapter.NPIV allows single virtual port names to move on to the advantage of another purpose fibre channel adapter from a source fibre channel adapter in addition, thereby, help operating system is moved to the purpose computing machine from source machine,, need not SAN is reconfigured according to embodiments of the invention.
As discussed above, in certain embodiments, operating system is moved to the process of purpose computing machine from source machine with need not to reconfigure, can carry out by the transferring module of operating system to be migrated.In alternative, the process that operating system is moved to the purpose computing machine from source machine only needs SAN is carried out reconfiguring seldom.In the example of Fig. 1, Host Administration control desk (HMC) (140) is connected to SAN by in the band or outer connect (142) of band.Can help operating system is moved to the purpose computing machine from source machine by following operation HMC (140), only need SAN is carried out minimum reconfiguring: (described purpose adapter is coupled to carry out data communication with SAN the purpose adapter of identifying purpose computing machine, the source adapter that described SAN is also coupled with source machine carries out data communication), from the zone, delete source adapter, adding purpose adapter in the zone, and indication operating system is nullified source adapter from login manager.After operating system was transferred to the purpose computing machine from source machine, HMC can indicate operating system to login manager login purpose adapter.
Constitute among Fig. 1 the layout of the equipment of shown example system and only be used for explanation, do not made restriction.Useful data handling system according to each embodiment of the present invention can comprise that Fig. 1 does not have Additional servers, router, other memory devices and the peer-to-peer architecture that shows, known to those skilled in the art.Network in such data handling system can be supported many data communication protocols, comprises for example TCP/IP, HTTP, WAP, HDTP, Fibre Channel, InfiniBand, and other are as the agreement known to the those skilled in the art.Each embodiment of the present invention can realize on the various hardware platforms the various hardware platforms shown in Fig. 1.
As mentioned above, operating system is moved to the process general using computing machine of purpose computing machine from source machine, that is, utilize automated computer to realize according to of the present invention.In order to further specify, Fig. 2 has provided the block scheme of automated computer, comprises the computing machine (152) that is used for according to an embodiment of the invention operating system being moved to from source machine the purpose computing machine.The computing machine of Fig. 2 (152) comprises at least one computer processor (156) or CPU and random access memory (168) (" RAM ").
Be stored among the RAM (168) is operating system (154).Being used for according to an embodiment of the invention, operation system of computer comprises Unix, Linux, Windows NT TM, i5/OS TM, and as other operating systems known to the those skilled in the art.Operating system (154) in the example of the Fig. 2 that shows is in RAM (168), and still, many assemblies of operating system also are stored in the nonvolatile memory (166) usually.As discussed above, the migration of operating system mainly is to be carried out by operating system to be migrated in certain embodiments of the present invention.Therefore, the example operation system of Fig. 2 comprises transferring module (232), this module can the identifying purpose computing machine the purpose adapter (described purpose adapter is coupled to carry out data communication with SAN, the source adapter that described SAN is also coupled with source machine carries out data communication), from login manager, nullify the virtual port names of source adapter, and from source adapter, cancel virtual port names.After operating system was transferred to the purpose computing machine from source machine, transferring module generally can be registered virtual port names to the purpose adapter, and utilized virtual port names to login manager login purpose adapter.
The computing machine of Fig. 2 (152) comprises the non-volatile computer memory (166) that is couple to other assemblies of processor (156) and computing machine by system bus (160).Non-volatile computer memory (166) can be used as hard disk drive (170), CD drive (172), EEPROM (Electrically Erasable Programmable Read Only Memo) (so-called EEPROM or flash memory) (174), ram driver (not shown) or realizes as any computer memory known to the those skilled in the art as other.
The exemplary computer of Fig. 2 (152) comprises communication adapter (167), be used for realizing with other computing machines (182) (comprise server, client, SAN data-carrier store, reach other as known to the those skilled in the art) carry out being connected of data communication (184), comprise connection by network.Communication adapter has realized being used to carrying out the hardware level of the connection of data communication, and by hardware level, local device and remote equipment or server are directly sending data communication each other and by network.Be used for according to an embodiment of the invention the example that operating system is moved to the communication adapter of purpose computing machine from source machine is comprised: fibre channel adapter, be used to carry out modulator-demodular unit that wired dial-up connects, be used to carry out Ethernet (IEEE 802.3) adapter that wired lan connects, and be used to carry out the 802.11b adapter that WLAN (wireless local area network) connects.
The exemplary computer of Fig. 2 comprises one or more input/output interface adapters (178).Input/output interface adapter in the computing machine, for example by being used to control to the output of the display device (180) such as computer display screen, and, realize user oriented I/O from the software driver and the computer hardware of the user of the user input device such as keyboard and mouse (181) input.
As discussed above, according to an embodiment of the invention operating system is moved to process the purpose computing machine from source machine, can realize by the transferring module in the operating system to be migrated, also can be by realizing such as the third party's entity that carries out the Host Administration control desk of data communication with source machine and purpose computing machine.In certain embodiments, the process that operating system is moved to the purpose computing machine from source machine also can need not SAN is reconfigured, and in other embodiments, only needs SAN is carried out minimum reconfiguring.In order to further specify, Fig. 3 has shown the exemplary method of operating system being moved to purpose computing machine (320) from source machine (316), this process does not need SAN is reconfigured, and can make intrasystem transferring module by spy to be migrated and carry out.
The method of Fig. 3 comprises the purpose adapter (318) of sign (302) purpose computing machine (320), and this purpose adapter is coupled to carry out data communication with SAN, and the source adapter (314) that described SAN is also coupled with source machine (316) carries out data communication.By using the in-band communications in the SAN, or the out-of-band communication by the SAN outside, carry out the process of the purpose adapter (318) of identification (302) purpose computing machine (320), this purpose adapter is coupled to carry out data communication with SAN, and the source adapter (314) that described SAN is also coupled with source machine (316) carries out data communication.In order to further specify the exemplary technique of identifying purpose adapter, Fig. 4 has provided the exemplary method of the purpose adapter that is used for the identifying purpose computing machine, described purpose adapter is coupled to carry out data communication with SAN, and the source adapter that described SAN is also coupled with source machine carries out data communication.The method of Fig. 4 comprises the server (404) in inquiry (402) SAN, so that search the world-wide port name (408) of purpose adapter, receives inquiry response (406), and this response comprises the world-wide port name (408) of purpose adapter.As discussed above, world-wide port name is the unique fibre channel identifiers that burns into adapter, therefore, is the unique identification of the static state of adapter.In the example of Fig. 4, server (404) has been safeguarded adapter identification database (416), and this database comprises and being coupled to carry out the sign of the adapter of data communication with SAN.The server of Fig. 4 (404) can be installed in above the login manager, or is positioned at and is coupled to another position of carrying out data communication with source machine.
Discerned to be coupled to SAN and carried out (described SAN is also coupled to carry out data communication with source adapter) after the adapter of purpose computing machine of data communication, the method for Fig. 4 continues by being identified in the purpose computing machine that this adapter has been installed above it.That is, operating system must be moved to and is coupled to and the related computing machine of adapter that is used for carrying out with SAN data communication.Therefore, the method for Fig. 4 also comprises inquiry (410) server (404), so that search the sign of the purpose computing machine (413) of purpose adapter (408), receives inquiry response (412), and this response comprises the purpose Computer I D (414) of recognition purpose computing machine.In the example of Fig. 4, server (404) comprises computer identity database (414), and this database comprises the Computer I D by the Adapter ID index, is used to identify the purpose computing machine with the adapter that is connected with SAN.Such computing machine is candidate's computing machine of operating system migration according to an embodiment of the invention.
Refer again to Fig. 3: after the purpose adapter of identifying purpose computing machine, the method for Fig. 3 continues by the virtual port names of nullifying (304) source adapter (314) from login manager (134).As described above, optical-fibre channel N-node comprises port name and N-Port ID.The process of nullifying the virtual port names of (304) source adapter (314) from login manager (134) according to the method for Fig. 3 is to carry out with the related of virtual port names by removing N_Port ID.Fibre channel specification provides releasing N_Port ID to nullify function LOGO with the related standard construction of virtual port names.
After removing N_Port ID and virtual port names related, typical embodiment comprises that also cancellation provides all I/O (I/O) equipment to the visit of the memory device on the SAN.The advantage of nullifying all input-output apparatus is to guarantee that I/O equipment terminates in any residue order that starts before the migration.The method of Fig. 3 also comprises cancels (306) virtual port names from source adapter (314).In the method for Fig. 3, cancel from source adapter that (306) virtual port names normally carried out by operating system to be migrated.The method of Fig. 3 also comprises transmits (308) to purpose computing machine (320) with operating system from source machine (316).The process of operating system from source machine (316) transmission (308) to purpose computing machine (320) usually carried out by the system manager, generally included operating system is copied to the purpose computing machine from source machine.In certain embodiments, the process of operating system from source machine (316) transmission (308) to purpose computing machine (320) comprised operating system is copied to intermediate storage medium such as disk from source machine, then with operating system from middle storage media replication to the purpose computing machine.
After operating system was transferred to the purpose computing machine from source machine, the method for Fig. 3 comprised to purpose adapter (318) registration (310) virtual port names.In many embodiment of the method for Fig. 3, be to make system by spy to be migrated to carry out to the process of purpose adapter (318) registration (310) virtual port names.
The method of Fig. 3 also comprises utilizes virtual port star purpose adapter (318) login (312) to login manager (134).As described above, optical-fibre channel N-node comprises port name and N-Port ID.According to the method for Fig. 3 utilize virtual port star purpose adapter (318) login (312) to the process of login manager (134) by carrying out N_PortID is related with virtual port names.Fibre channel specification provides the standard feature of being issued by fibre channel adapter FDISC to login manager, and the indication login manager distributes N-Port ID to set up the N-node to adapter.In the method for Fig. 3, the virtual port names of utilizing the front to use, parametrization FDSIC function with source adapter.Virtual port names carries out because subregion among the SAN and LUN mask are based on, and provides visit to the same memory device that can use source machine according to the advantage of the migration of the method for Fig. 3 before migration, and need not SAN is reconfigured.
After obtaining N_Port ID, utilize virtual port names also to comprise and utilize new N_Port ID to sign in to the I/O equipment of before migration, nullifying to the process of login manager (134) login (312) purpose adapter (318).Fibre channel specification provides port login (PLOGI) process to sign in to I/O equipment.
The advantage of the method for Fig. 3 has provided the method for carrying out operating system migration, does not need SAN is reconfigured, because the method for Fig. 3 is utilized virtual port names.In order to further specify, Fig. 5 has provided moves to the another kind of method of purpose computing machine with operating system from source machine, does not need to use virtual port names, only to minimum the reconfiguring of carrying out of SAN.The method of Fig. 5 can be by realizing such as the third party's entity that carries out the Host Administration control desk (HMC) of data communication with SAN.
The method of Fig. 5 comprises the purpose adapter (318) of sign (502) purpose computing machine (320), and this purpose adapter is coupled to carry out data communication with SAN, and the source adapter (314) that described SAN is also coupled with source machine (316) carries out data communication.Described with reference to figure 4 as mentioned, (described purpose adapter is coupled to carry out data communication with SAN the purpose adapter of identifying purpose computing machine through the following steps, the source adapter that described SAN is also coupled with source machine carries out data communication): the server in the inquiry SAN is to search the world-wide port name of purpose adapter, then, querying server, searching the purpose computing machine of purpose adapter, the candidate's purpose computing machine that moves with identification.
The method of Fig. 5 also comprises deletion (504) source adapter (314) from zone (512).As discussed above, the zone is the logic groups to main frame and resource.The exemplary zone of Fig. 5 (512) comprises a plurality of adapters that the world-wide port name by pre-burning in the zone (514) identifies.The exemplary zone of Fig. 5 (512) is also related with adapter (514) with target (518).Target is that the adapter of the association that operating system can be by the zone conducts interviews to it so that carry out physical storage devices in the described zone of data storage.
In order to further specify, Fig. 6 provides the process flow diagram that has shown the exemplary method of deletion source adapter from the zone.The method of Fig. 6 comprises the zone (512) that identification (602) is related with source adapter (608).In the method for Fig. 6, identification (602) zone (512) related with source adapter (608) is to carry out by the site polling response (606) of the sign of query region manager (626) and reception inclusion region (512).The zone manager of Fig. 6 (626) maintenance area database (630), this regional database comprises the sign by the described adapter of the region index of the association of adapter.In the example of Fig. 6, the zone that zone manager (626) inquiry is related with adapter, and send site polling response (606), and wherein comprising source adapter ID (608) and area I D (512), this area I D identifies the zone of distributing source adapter to it uniquely.
The process of deletion source adapter from the zone according to the method for Fig. 6 also comprises the target (620) that identification (612) is related with source adapter (608).As mentioned above, target is that operating system can conduct interviews so that carry out the interior physical storage devices in zone of data storage to it.In the example of Fig. 6, comprise the regional aim inquiry response (618) of the sign of target (620) by query region manager (626) and reception, carry out the process of identification (612) target (620) related with source adapter (608).In the example of Fig. 6, zone manager (626) has been safeguarded target database (628), and this target database comprises the target by the adapter index of association.Zone manager (626) is sent the regional aim inquiry response (618) that comprises source adapter (608) and the target (620) related with source adapter.
Also comprise according to the process of deletion source adapter from the zone of the method for Fig. 6 and to remove source adapter (608) with related (622) of target (620) with from zone (512), delete (624) source adapter.Removing source adapter before the migration operation system is to discharge target with the related advantage of target, so that after purpose computer migrates operating system, related with the purpose source adapter.
Refer again to Fig. 5: at deletion (504) source adapter (314) from zone (512) afterwards, the method for Fig. 5 continues by add (506) purpose adapter (318) in zone (512).In order to further specify, Fig. 7 is the process flow diagram that has shown the exemplary method of adding purpose adapter in the zone. and the process of adding purpose adapter in the zone according to the method for Fig. 7 is carried out by identification (602) zone (512) related with source adapter. and described with reference to figure 6 as mentioned, the site polling of the sign of the process in zone (512) that identification (602) is related with source adapter (608) by inquiring about (604) zone manager (626) and reception inclusion region (512) responds (606) and carries out.The zone manager of Fig. 7 (626) maintenance area database (630), this regional database comprises the sign by the described adapter of the region index of the association of adapter.In the example of Fig. 6, the zone that zone manager (626) inquiry is related with adapter, and send site polling response (606), wherein comprise source adapter ID (608) and identify the area I D (512) that distributes the zone of source adapter to it uniquely.
Also comprise purpose adapter (706) in (702) zones (512) according to the process of adding purpose adapter in the zone of the method for Fig. 7.In zone (512), comprise that the advantage of (702) purpose adapter (706) is that the adding purpose adapter is as one in the interior perhaps member element in zone.
The process of adding purpose adapter in the zone according to the method for Fig. 7 also comprises the target (620) that identification (612) is related with source adapter (608).As mentioned above, target is that operating system can conduct interviews so that carry out the interior physical storage devices in zone of data storage to it.In the example of Fig. 7, comprise the regional aim inquiry response (618) of the sign of target (620) by query region manager (626) and reception, carry out the process of identification (612) target (620) related with source adapter (608).In the example of Fig. 7, zone manager has been safeguarded target database (628), and this database comprises the target by the adapter index of association.Zone manager (626) is sent the regional aim inquiry response (618) of the sign of the sign that comprises source adapter (608) and the target (620) related with source adapter.
The process of adding purpose adapter in the zone according to the method for Fig. 7 also comprises purpose adapter (706) and target (620) related (704).Is that target and purpose adapter are linked with purpose adapter (706) with the advantage of target (620) related (704), thereby helps the visit of the operating system of migration after moving to the purpose computing machine to target.
Refer again to Fig. 5, after adding purpose adapter in the zone, the method for Fig. 5 continues by nullify (508) source adapter (314) from login manager (134).As discussed above, in many examples, HMC helps to realize the method for Fig. 5.In such embodiments, after the purpose adapter added the zone to, HMC indication spy was made system and nullify source adapter from login manager.As described above, optical-fibre channel N-node comprises port name and N-Port ID.Nullifying (508) source adapter (314) from login manager (134) is to carry out with the related of port name by removing N_Port ID.With the method contrast of Fig. 3, the method for Fig. 5 does not need to use virtual port names, and therefore, the port name of the adapter in the example of Fig. 5 can be the world-wide port name of virtual port names or pre-burning.Fibre channel specification provides releasing N_Port ID to nullify function LOGO with the related standard construction of port name.
After removing N_Port ID and port name related, typical embodiment comprises that also cancellation provides all I/O (I/O) equipment to the visit of the memory device on the SAN.The advantage of nullifying all input-output apparatus is to guarantee that I/O equipment terminates in any residue order that starts before the migration.
The method of Fig. 5 also comprises transmits (510) to purpose computing machine (320) with operating system from source machine (316).The process of operating system from source machine (316) transmission (510) to purpose computing machine (320) carried out by the third party such as the system manager usually, generally included operating system is copied to the purpose computing machine from source machine.In certain embodiments, the process of operating system from source machine (316) transmission (510) to purpose computing machine (320) comprised operating system is copied to intermediate storage medium such as disk from source machine, then with operating system from middle storage media replication to the purpose computing machine.
After operating system was transferred to the purpose computing machine from source machine, the method for Fig. 5 comprised to login manager (134) login (513) purpose adapter (318).As discussed above, in many examples, HMC helps to realize the method for Fig. 5.In such embodiments, after operating system was transferred to the purpose computing machine from source machine, HMC indication operating system was to login manager login purpose adapter.As described above, optical-fibre channel N-node comprises port name and N-Port ID.Can be to login manager login purpose adapter by carrying out N_Port ID is related with port name.With the method contrast of Fig. 3, the method for Fig. 5 does not need to use virtual port names, and therefore, the port name of the adapter in the example of Fig. 5 can be the world-wide port name of virtual port names or pre-burning.Fibre channel specification provides standard feature from the pre-burning world-wide port name FLOGI that is issued by fibre channel adapter to login manager that register, and the indication login manager distributes N-Port ID to set up the N-node to adapter.After obtaining N_Port ID, also comprise according to the process to login manager login purpose adapter of the method for Fig. 5 and to utilize new N_Port ID to sign in to the I/O equipment of before migration, nullifying.Fibre channel specification provides port login (PLOGI) process to sign in to I/O equipment.
The process that operating system is moved to the purpose computing machine from source machine has many advantages according to an embodiment of the invention.These advantages comprise:
Can use in the band or the outer inquiry of band is automatically discerned to the purpose adapter of the purpose computing machine of migration operation system wherein.
In certain embodiments, do not need SAN to reconfigure and to support the OS migration, and only need minimum reconfiguring in other embodiments.
Ongoing OS operation not being carried out under the situation of havoc, can carry out operating system migration, because before migration, do not need to carry out shutoff operation.The uncompleted order of possibility well afoot will be finished singularly before migration, but will automatically re-execute them by normal wrong recovery after migration.
Owing in transition process, do not need shutoff operation, therefore, do not need to reconfigure software driver and can support migration, application program can continue and can not interrupt.
General technology described in this instructions is applicable to the SAN technology outside the optical-fibre channel.
According to the operating system migration of some embodiment of the present invention needs virtual port names not, therefore, do not need to use N end ID virtual.Provide the method that does not need virtual port names to help in the old-fashioned configuration of not supporting NPIV, using.
Description according to the front is appreciated that under the situation that does not depart from scope, can modify and change in each embodiment of the present invention.Description in this instructions only is used for illustration purpose, and should not be understood that to make restriction.Scope of the present invention is only made restriction by the language of following claim.

Claims (14)

1. one kind is used for operating system is moved to the purpose computer method from source machine, and described method comprises:
Discern the purpose adapter of described purpose computing machine, described purpose adapter is coupled to carry out data communication with storage area network, and the source adapter that described storage area network is also coupled with described source machine carries out data communication;
The described source adapter of deletion from the zone, described zone is the logic groups to main frame and resource;
In described zone, add described purpose adapter;
After in described zone, adding described purpose adapter, from the login manager that is connected to storage area network, nullify described source adapter; And
After described operating system is transferred to described purpose computing machine from described source machine, login described purpose adapter to described login manager.
2. method according to claim 1, wherein, the step of the described source adapter of deletion further comprises from the zone:
Discern the zone related with described source adapter;
Discern the target related with described source adapter;
Remove the related of described source adapter and described target; And
The described source adapter of deletion from described zone.
3. method according to claim 1, wherein, in described zone, add described purpose adapter and further comprise:
Discern the zone related with described source adapter;
Described purpose adapter is included in the described zone;
Discern the target related with described source adapter; And
With described purpose adapter and described target association.
4. method according to claim 2, wherein, in described zone, add described purpose adapter and further comprise:
Discern the zone related with described source adapter;
Described purpose adapter is included in the described zone;
Discern the target related with described source adapter; And
With described purpose adapter and described target association.
5. according to the described method of any one claim of front, wherein, the step of discerning the purpose adapter of described purpose computing machine further comprises: name server is inquired about to search the world-wide port name of described purpose adapter, then, server is inquired about to search the purpose computing machine of described purpose adapter.
6. according to each described method among the claim 1-4, wherein, step from described purpose adapter to described login manager that login further comprises: the N_Port ID of described purpose adapter is related with port name.
7. according to each described method among the claim 1-4, wherein, the step of nullifying described source adapter from described login manager further comprises: the N_Port ID that removes described source adapter is related with port name.
8. one kind is used for operating system is moved to the purpose system for computer from source machine, and described system comprises:
Be used to discern the device of the purpose adapter of described purpose computing machine, described purpose adapter is coupled to carry out data communication with storage area network, and the source adapter that described storage area network is also coupled with described source machine carries out data communication;
Be used for from the device of the described source adapter of zone deletion, described zone is the logic groups to main frame and resource;
Be used for adding the device of described purpose adapter to described zone;
Be used for from the login manager that is connected to storage area network, nullifying the device of described source adapter after described purpose adapter is added in described zone; And
Be used for after described operating system is transferred to described purpose computing machine from described source machine, logining the device of described purpose adapter to described login manager.
9. system according to claim 8 wherein, is used for further comprising from the device of the described source adapter of zone deletion:
Be used to discern the device in the zone related with described source adapter;
Be used to discern the device of the target related with described source adapter;
Be used to remove the related device of described source adapter and described target; And
Be used for from the device of the described source adapter of described zone deletion.
10. system according to claim 8 wherein, is used for further comprising to the device of the described purpose adapter of described zone interpolation:
Be used to discern the device in the zone related with described source adapter;
Be used for described purpose adapter is included in the device in described zone;
Be used to discern the device of the target related with described source adapter; And
Be used for device with described purpose adapter and described target association.
11. system according to claim 9 wherein, is used for further comprising to the device of the described purpose adapter of described zone interpolation:
Be used to discern the device in the zone related with described source adapter;
Be used for described purpose adapter is included in the device in described zone;
Be used to discern the device of the target related with described source adapter; And
Be used for device with described purpose adapter and described target association.
12. the described system of any one claim in 11 according to Claim 8, wherein, the device that is used to discern the purpose adapter of described purpose computing machine further comprises: be used for name server is inquired about with the world-wide port name of searching described purpose adapter and then server inquired about device with the purpose computing machine of searching described purpose adapter.
13. the described system of any one claim in 11 according to Claim 8, wherein, the device that is used for logining to described login manager described purpose adapter further comprises: be used for the device that the N_Port ID of described purpose adapter is related with port name.
14. the described system of any one claim in 11 according to Claim 8, wherein, be used for further comprising: be used to remove the N_Port ID of the described source adapter of cancellation and the related device of port name from the device of the described source adapter of described login manager cancellation.
CN200580042925.1A 2004-12-14 2005-12-07 Method and device for migrating operating system from source computer to target computer Expired - Fee Related CN101080694B (en)

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